Homework_13_Solutions - Homework 13 Solutions 16.1 a....

Homework 13 Solutions 16.1 a. Appropriate. The response variable is quantitative and this is a comparison of independent groups. b. Not appropriate. The response variable is categorical. c. Appropriate. The response variable is quantitative and this is a comparison of independent groups. d. Not appropriate. It's not a comparison of independent groups. There was only one group and all individuals listened to all five songs. 16.2 a. The null hypothesis was that the mean body mass is the same for the three age group populations. Using symbols, this would be written as H0 : 3 2 1 μ = μ = μ b . The p-value is small, below the usual .05 standard for significance, so it can be concluded that mean body mass is not the same for the three age group populations. 16.3 a. The null hypothesis is that mean hours of television watching per day is the same for all educational degree populations. The alternative hypothesis mean hours of television watching per day is not the same for all educational degree populations. In symbols, the null is H0 : 5 4 3 2 1 μ = μ = μ = μ = μ . b. F =35.98, p-value =.000. Reject the null hypothesis; conclude that mean hours of television watching is not the same for all educational degree populations. c.

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